Add support for reading the CRC in non-blocking mode. Useful for tests
that want to start the CRC capture, then do a bunch of operations, then
collect however many CRCs that got generated. The current
igt_pipe_crc_new() + igt_pipe_crc_get_crcs() method would block until
it gets the requested number of CRCs, whreas in non-blocking mode we
can just read as many as got generated thus far.
v2: __attribute__((warn_unused_result)), document the
new igt_pipe_crc_get_crcs() return value (Daniel)
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
It's nice to see just how many components the crc claims to have
when the count don't match what we expect.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
gem_flink_race and prime_self_import have subtests which read the
number of open gem objects from debugfs to determine if objects have
leaked during the test. However the test can fail sporadically if
the number of gem objects changes due to other process activity.
This patch introduces a change to check the number of gem objects
several times to filter out any fluctuations.
v2: Moved the common code to a library and made the loop android
specific (Daniel Vetter)
v3: Renamed get_stable_obj_count -> igt_get_stable_obj_count
Signed-off-by: Derek Morton <derek.j.morton@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Convenience wrapper suggested by Chris for igt_set_timeout(0, NULL).
v2: While at it add an empty line in kms_flip to make
set/reset_timeout a visual block.
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
"Timed out" isn't a terribly informative message, allow users to set
something more informative. Inspired by a request from Jesse.
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
A helpful function for when you want to read a whole debugfs file to a
string and don't want to worry about opening and closing file
descriptors and asserting buffer sizes.
We've been using this already for kms_frontbuffer_tracking and
kms_fbcon_fbt, so the only test with new code here is kms_fbc_crc.
Also notice that for kms_fbc_crc we had to increase the buffer size
since the file can sometimes be bigger than 64 bytes - depending on
the reason why FBC is disabled.
Of course, there are probably many other programs we can patch, but
I'm not doing this now.
v2: Add the macro to wrap sizeof() (Daniel).
v3: Add documentation for the macro too (Daniel).
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Let's just steal the "crc" namespace and add this by default to
igt_pipe_crc_collect_crc() instead of adding more calls to other
tests. If tests want special waits on just some of their collect_crc()
calls, they can use another name instead of "crc".
This is very useful when developing, especially when the CRC we get is
wrong: we want to look at the screen to see what's going on before we
can think about how to fix the problem. So let's add this to the lib
instead of adding this to every single test I need to debug.
v2: Add some documentation (Daniel).
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Avoid having to escape certain characters in documentation comments by
not allowing docbook markup tags. Markdown formatting in documentation
comments is still supported.
Signed-off-by: Thomas Wood <thomas.wood@intel.com>
Add rules to fix unused-result warnings when compiling with
_FORTIFY_SOURCE defined and apply them to the library and tests.
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thomas Wood <thomas.wood@intel.com>
It is theoretically possible to hit these in the wild, so only warn
about them. Dropping the test is probably too much since these caught
some real bugs in the past.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Tests should positively check for crc matches, not for mismatches.
Enforce this by only exposing and igt_assert function for comparing
crcs.
For the few tests which didn't just do this as consistency checks but
to do functional tests add FIXME comments that some reference crc
values are missing.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Because of hash collisions tests should only ever compare crc
checksums for equality. Checking for inequality can result in random
failures.
To ensure this only expose and igt_assert function and use that.
Follow-up patches will rework the code for tests which don't follow
this requirement and try to compare for CRC inequality.
v2: Rebase on top of Matt's kms_plane changes.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Also move forcewake and stop_rings code from igt_debugfs to igt_gt
since it fits better. And move the hang injection fork helpers from
igt_aux to igt_gt, too.
Also push the intel_gen call into igt_hang_ring while at it.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
On CHV we sometimes see not just one but two bad CRCs. No real idea
what would cause that, but let's just throw away the second CRC as
well to gain some stability for the tests.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
The problem is that this causes writes to registers, and if the pipe
is off they might go nowhere (e.g. when runtime pm is enabled).
Furthermore we can only really check once the modeset setup is done,
but again most tests set up the CRC structure before calling
igt_commit and friends. We could add crc restore support to the
kernel's rpm code, but that will end up being rather invasive and
fragile hard-to-test code.
Now originally this was needed back when CRC support wasn't available
everywhere. But that's fixed now.
So given all this just drop that sanity check and make sure that we
only touch the debugfs file (and so the hw state) when we know the
pipe is running in the desired configuration.
A complementary kernel patch will try to catch offenders by returning
-EIO if the pipe is off.
v2: Forgot to git add one hunk.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=86092
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Except in igt_core since that would lead to some hilarious recursions.
v2: Don't fflush any more, spotted by Chris.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This is what we read when the CRC logic in in a powered down well. We
really don't want that to happen.
In theory, it's possible 0xffffffff to be a valid CRC value, so I don't
assert here.
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
If IGT_NO_FORCEWAKE is set, skip the forcewake open. Useful when you
want to poke at register without otherwise disturbing the GPU.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Remove the igt_assert() from the debugfs mount. It will fail if debugfs
is already mounted. With the assert in place it's very annying to use
igt without i915 loaded (eg. to dump BIOS configured registers).
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
The subsequet code expects the read() to not have filled the entire
buffer, and yet we allow it to do so. Reduce the size passed to read()
by 1 to make the code sane.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
The assert in igt_set_stop_rings() is a bit bogus. Suppsoedly it was
meant to assure that the caller always restores the rings to running
state after stopping them. But in its current form it will trigger
any time someone calls the function and the rings were already stopped.
So you can't even restore the rings to running state w/o the assert
triggering.
Fix it up so that it'll ignore the current ring state when we're trying
to restore the rings back to running state.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
For 1 function and 2 types we kinda don't need separate files.
Especially now that igt_kms is much more focused on the actual modeset
stuff with all the framebuffer helpers extracted to igt_fb.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
I've left unistd.h in it - it's not strictly required but most users
of drmtest.h want it for the open helpers, and then you kinda need to
close that file descriptor again ...
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Functions which provide feature checks through igt_skip should be of
the form <prefix>_require_<feature>.
Otoh feature checks which return in a boolean whether the feature is
available should be of the form <prefix>_has_<feature>, e.g.
gem_has_blt.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Also add a missing igt_assert to kms_fbc_crc and again add the missing
Returns: section to the api doc.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Also update the api docs a bit since the Returns: section was missing.
v2: Readd the accidentally lost line for @filename.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
... and I immediately regret that I've killed the return value
for igt_debugfs_init, since we have callers which need to work
without the forcewake stuff, e.g. the reg dumper needs to work
without i915 loaded.
Put this new helper to good use in the mmio code and the pm_pc8
testcase.
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Again issues with an enum, this time intel_pipe_crc_source. The
typedefs seem to work better here though.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
